Dichotomous Key Practice

Front

What is a dichotomous key?

Back

A dichotomous key is a tool that allows the identification of organisms by answering a series of questions that lead to the correct name of the organism.

Front

What is the first step in using a dichotomous key?

Back

The first step is to start with the first question in the key.

Front

What type of features do we examine when using a dichotomous key?

Back

We examine physical features of the organisms.

Front

What is the scientific name of the housefly?

Back

Musca domestica.

Front

Which method is most reliable for determining evolutionary similarities?

Back

DNA analysis is the most reliable method.

Front

What is the purpose of a dichotomous key?

Back

The purpose of a dichotomous key is to help users identify unknown organisms based on their characteristics.

Front

What are the two options typically presented in each step of a dichotomous key?

Back

Each step presents two contrasting statements or questions.

Front

What is an example of a physical feature used in a dichotomous key?

Back

Examples include color, size, shape, and texture.

Front

How does a dichotomous key differ from a regular key?

Back

A dichotomous key uses a series of choices to narrow down options, while a regular key typically unlocks a physical object.

Front

What is the significance of using scientific names for organisms?

Back

Scientific names provide a universal way to identify species, reducing confusion caused by common names.